A lightning protection structure applicable to the intelligent busbar trunking unit of a photovoltaic power station

Abstract

The present invention provides a lightning protection structure applicable to an intelligent busbar box of a photovoltaic power station, belonging to the field of lightning protection structures of busbar boxes. It includes a support frame, on which a plurality of photovoltaic modules are fixedly installed, a busbar box is fixedly installed on the support frame, a lightning protection module is fixedly installed in the busbar box, a grounding wire penetrates and is fixedly installed on the busbar box, and the grounding wire is electrically connected to the lightning protection module. A graphite grounding rod is fixedly installed on the grounding wire. A shunt component is arranged at the lower end of the busbar box, and a triggering component is arranged in the busbar box. Through the cooperation of a plurality of transmitting coils and electromagnetic absorbers, the present application can weaken the current conducted by the grounding wire, thereby effectively ensuring the lightning protection effect of the equipment. At the same time, through the heat conduction mechanism, multi-stage heat dissipation of the electromagnetic absorber can be realized to ensure its continuous weakening effect on the current in the grounding wire.

Description

Technical Field

[0001] The present invention relates to the field of lightning protection structures, and more specifically, to a lightning protection structure applicable to an intelligent busbar trunking unit of a photovoltaic power station. Background Art

[0002] In a photovoltaic power station, photovoltaic modules can convert solar energy into direct current. These direct currents will be collected in a busbar trunking unit under the conduction of cables. After the busbar trunking unit integrates these direct currents, they will be centrally input into subsequent devices (such as a DC lightning protection power distribution cabinet, etc.). To effectively avoid damage to components inside the device and surrounding objects caused by overvoltage and overcurrent generated by lightning strikes, a lightning protection module is generally added inside the busbar trunking unit. Through the cooperation of the lightning protection module and the grounding system, the diversion of lightning strike current can be realized, thereby ensuring the stability and safety of the busbar trunking unit during operation.

[0003] However, when the existing lightning protection module conducts the overcurrent generated by lightning strikes, it usually diverts the overcurrent to the ground through the cooperation of a grounding wire and a grounding rod. If the lightning strike suffered by the device is too large, resulting in too large a current introduced into the ground, or the resistance of the soil is relatively high and the current cannot be discharged in time, this high-potential current is likely to counterattack to the busbar trunking unit or electrical equipment around the busbar trunking unit, causing secondary damage to the equipment. Therefore, only through the cooperation of the grounding wire and the grounding rod, the effective diversion of lightning strike current cannot be ensured. Summary of the Invention

[0004] Aiming at the problem in the prior art that the blanking device cannot be adjusted according to the blanking requirements of steel bars of different length specifications and can only realize the blanking of steel bars with a fixed length, the purpose of the present invention is to provide a lightning protection structure applicable to an intelligent busbar trunking unit of a photovoltaic power station.

[0005] To solve the above problems, the present invention adopts the following technical solutions:

[0006] A lightning protection structure applicable to an intelligent busbar trunking unit of a photovoltaic power station includes a support frame, on which a plurality of photovoltaic modules are fixedly installed, a busbar trunking unit is fixedly installed on the support frame, a lightning protection module is fixedly installed inside the busbar trunking unit, a grounding wire penetrates and is fixedly installed on the busbar trunking unit, and the grounding wire is electrically connected to the lightning protection module. A graphite grounding rod is fixedly installed on the grounding wire, a shunt component is arranged at the lower end of the busbar trunking unit, and a trigger component is arranged inside the busbar trunking unit;

[0007] The shunt assembly includes two support rods fixedly installed at the lower end of the busbar box. A heat conduction cylinder is fixedly installed between the two support rods. An annular heat conduction plate is fixedly installed on the inner wall of the heat conduction cylinder. An electromagnetic absorber is fixedly installed on the outer wall of the annular heat conduction plate. Linear and uniformly distributed transmitting coils are fixedly installed in the electromagnetic absorber, and the transmitting coils are all electrically connected to the grounding wire. An isolation component is installed in the electromagnetic absorber, and a heat conduction mechanism is installed on the heat conduction cylinder;

[0008] The trigger assembly includes two fixing plates fixedly installed on the inner top wall of the busbar. Heat insulation cylinders are fixedly installed at the upper ends of the two fixing plates. A heat dissipation component is installed between the two heat insulation cylinders. Connecting pipes penetrate and are fixedly installed on the two heat insulation cylinders. Rotating shafts are hermetically penetrated and rotatably installed at the upper ends of the two connecting pipes. A trigger mechanism is installed on the left rotating shaft.

[0009] Optionally, the isolation component includes two isolation films fixedly installed in the electromagnetic absorber, and both isolation films are fixedly connected to the corresponding transmitting coils.

[0010] Optionally, the heat conduction mechanism includes heat conduction pads linearly and uniformly fixedly installed on the outer wall of the heat conduction cylinder. Heat conduction pipes are fixedly installed on the heat conduction pads. Fins are penetrated and fixedly installed in a ring shape among the heat conduction pipes;

[0011] A plurality of heat dissipation holes are formed in the electromagnetic absorber. Air delivery pipes are fixedly communicated in a ring shape at the upper end of the heat conduction cylinder. A ring pipe is hermetically penetrated and fixedly installed among the air delivery pipes. Unidirectional air suction pipes are fixedly communicated in a ring shape on the outer wall of the ring pipe. Injection pipes are fixedly communicated in a ring shape on the inner wall of the ring pipe, and one ends of the injection pipes are all located in the corresponding heat dissipation holes. A heat absorption component is installed among the air delivery pipes.

[0012] Optionally, the heat absorption component includes an annular cylinder fixedly installed between the two support rods. An air suction pipe is fixedly installed at the lower ends of the two support rods. Two pipe bodies are fixedly communicated between the annular cylinder and the air suction pipe. A sealing slide plate is hermetically slidably installed in the annular cylinder. Piston rods are hermetically slidably installed in the air delivery pipes, and the upper ends of the piston rods are hermetically penetrated and slidably installed on the annular cylinder, and the upper ends of the piston rods are fixedly connected to the sealing slide plate.

[0013] Optionally, the heat dissipation component includes storage cylinders respectively and fixedly installed in two heat insulation cylinders, and the lower ends of the two connecting pipes are fixedly connected to the corresponding storage cylinders. Heat conduction blocks are fixedly installed between the two storage cylinders and the lightning protection module, and both heat conduction blocks hermetically penetrate and are fixedly installed on the corresponding heat insulation cylinders. Guide pipes are fixedly communicated between the upper ends of the two storage cylinders and the lower ends of the corresponding connecting pipes. The lower ends of the two rotating shafts are fixedly installed with fan blades evenly distributed in a ring shape, and the upper ends of the two rotating shafts are fixedly installed with two fans.

[0014] Optionally, the triggering mechanism includes a limiting cylinder rotatably installed on the left rotating shaft. Two fuse wires are fixedly installed in the limiting cylinder. A connecting component is jointly installed between the two fuse wires and the left heat conduction block. An active contact plate is jointly and fixedly installed between the two fuse wires, and the active contact plate is slidably installed in the limiting cylinder. A fixed contact plate is fixedly installed in the limiting cylinder.

[0015] Optionally, the connecting component includes a heat conduction rod fixedly installed on the left heat conduction block. Heat conduction rings are sleeved on the two fuse wires, and both heat conduction rings are fixedly connected to the heat conduction rod.

[0016] Optionally, a rain shield is fixedly installed on the busbar box. Two air inlet holes are opened on the busbar box. Dehumidifying plates are fixedly installed on the two air inlet holes. Two drainage plates are fixedly installed in the busbar box. A plurality of ventilation holes are opened on the busbar box.

[0017] Optionally, a positive fuse is fixedly installed in the busbar box. A negative fuse is fixedly installed in the busbar box. The positive fuse and the negative fuse are both electrically connected to the lightning protection module. A busbar is fixedly installed in the busbar box, and the lightning protection module is electrically connected to the busbar. A circuit breaker is fixedly installed in the busbar box, and the busbar is electrically connected to the circuit breaker.

[0018] Optionally, a communication module is fixedly installed in the busbar box. A power supply module is fixedly installed in the busbar box, and the power supply module is electrically connected to the communication module.

[0019] The technical solution provided by the present invention has at least the following beneficial effects compared with the prior art:

[0020] In the above solution, when the lightning strike current is conducted to the grounding wire through the lightning protection module, an alternating magnetic field can be generated through a plurality of transmitting coils, and the electromagnetic absorber can absorb the energy of the alternating magnetic field and convert it into heat energy, thereby realizing the weakening of the overcurrent in the grounding wire, which helps to reduce the damage caused to the equipment and the objects around the equipment due to excessive current.

[0021] By setting up a heat conduction mechanism, after the electromagnetic absorber converts part of the current in the grounding wire into heat, multi-stage heat dissipation treatment can be carried out on the surface of the electromagnetic absorber, which can help improve the heat dissipation speed of the surface of the electromagnetic absorber, ensure the efficiency of continuously converting the current in the grounding wire into heat energy by the electromagnetic absorber, and at the same time can effectively improve the service life of the electromagnetic absorber.

[0022] By setting up a heat dissipation component, when the lightning protection module conducts lightning strike current and causes its surface temperature to continuously rise, timely heat dissipation treatment can be carried out on the surface of the lightning protection module. This can help improve the lightning protection performance of the lightning protection module and at the same time effectively improve its service life. When the lightning protection performance of the lightning protection module deteriorates, through the triggering mechanism, it is convenient for the staff to carry out timely maintenance or replacement of the lightning protection module to ensure its lightning protection effect on the equipment in cooperation with the grounding wire during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 is Figure 1 a structural schematic diagram of the components on the centralized busbar box in

[0026] Figure 3 is Figure 2 a structural schematic diagram of the shunt component in

[0027] Figure 4 is Figure 3 a partial sectional schematic diagram of the shunt component in

[0028] Figure 5 is Figure 3 a structural schematic diagram of the heat conduction mechanism in

[0029] Figure 6 is Figure 5 a sectional schematic diagram of the air duct in

[0030] Figure 7 is Figure 5 a connection structural schematic diagram between the heat conduction cylinder and multiple fins in

[0031] Figure 8 is Figure 5 a disassembled schematic diagram of the annular heat conduction plate and the electromagnetic absorber in

[0032] Figure 9 is Figure 2Cross-sectional schematic diagram of the middle busbar box;

[0033] Figure 10 is Figure 9 front view schematic diagram of;

[0034] Figure 11 is Figure 9 structural schematic diagram of the middle busbar box after rotating a certain angle;

[0035] Figure 12 is Figure 10 structural schematic diagram of the middle trigger component;

[0036] Figure 13 is Figure 12 structural schematic diagram of the middle heat dissipation component;

[0037] Figure 14 is Figure 13 structural schematic diagram of the middle trigger mechanism;

[0038] Figure 15 is Figure 14 cross-sectional schematic diagram of the middle current-limiting cylinder.

[0039] [Reference Signs]

[0040] 1. Support frame; 2. Photovoltaic module; 3. Busbar box; 4. Grounding wire;

[0041] 5. Shunt component; 51. Support rod; 52. Ring cylinder; 53. Suction pipe; 54. Pipe body; 55. Sealing slide plate; 56. Piston rod; 57. Heat conduction cylinder; 58. Ring heat conduction plate; 59. Electromagnetic absorber; 510. Heat conduction pad; 511. Heat conduction pipe; 512. Fin; 513. Air duct; 514. Ring pipe; 515. One-way suction air duct; 516. Injection pipe; 517. Heat dissipation hole; 518. Transmitting coil; 519. Isolation film;

[0042] 6. Graphite grounding rod;

[0043] 7. Positive fuse; 8. Negative fuse; 9. Lightning protection module; 10. Busbar; 11. Circuit breaker; 12. Communication module; 13. Power supply module;

[0044] 14. Trigger component; 141. Dehumidification plate; 142. Drainage plate; 143. Ventilation hole; 144. Heat insulation cylinder; 145. Heat conduction block; 146. Storage cylinder; 147. Connecting pipe; 148. Duct; 149. Rotating shaft; 1410. Fan blade; 1411. Fan; 1412. Limiting cylinder; 1413. Heat conduction rod; 1414. Fuse wire; 1415. Heat conduction ring; 1416. Movable contact plate; 1417. Fixed contact plate.

[0045] As shown in the figure, in order to clearly show the structure of the embodiments of the present invention, specific structures and devices are marked in the figure. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device, and environment. Those of ordinary skill in the art can adjust or modify these devices and environments according to specific needs. Detailed Embodiments

[0046] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0047] It should be noted that in the specification, references to "one embodiment", "an embodiment", "exemplary embodiments", "some embodiments", etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not every embodiment necessarily includes such specific features, structures, or characteristics. Additionally, when describing a specific feature, structure, or characteristic in combination with an embodiment, implementing such feature, structure, or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0048] Generally, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather can alternatively, at least in part depending on the context, allow for the existence of other factors that may not be explicitly described.

[0049] It can be understood that the meanings of "on", "above", and "over" in the present invention should be interpreted in the broadest sense, such that "on" not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above" or "over" not only means "above" or "over" something, but also can include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0050] In addition, spatial relative terms such as "under", "below", "lower part", "above", "upper part", etc. may be used in this text for convenience of description to describe the relationship between one element or feature and another or more elements or features, as shown in the attached drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device other than the orientation depicted in the attached drawings. The device may be oriented in other ways, and the spatial relative descriptive terms used in this text may be similarly interpreted accordingly.

[0051] As Figures 1 to 2 , Figures 9 to 10 shown, the present invention provides a lightning protection structure applicable to an intelligent busbar box of a photovoltaic power station, including a support frame 1, on which a plurality of photovoltaic modules 2 are fixedly installed, a busbar box 3 is fixedly installed on the support frame 1, a lightning protection module 9 is fixedly installed in the busbar box 3, a grounding wire 4 penetrates and is fixedly installed on the busbar box 3, and the grounding wire 4 is electrically connected to the lightning protection module 9, a graphite grounding rod 6 is fixedly installed on the grounding wire 4, a shunt component 5 is arranged at the lower end of the busbar box 3, and a trigger component 14 is arranged in the busbar box 3.

[0052] A positive fuse 7 is fixedly installed in the busbar box 3, a negative fuse 8 is fixedly installed in the busbar box 3, and both the positive fuse 7 and the negative fuse 8 are electrically connected to the lightning protection module 9, a busbar 10 is fixedly installed in the busbar box 3, and the lightning protection module 9 is electrically connected to the busbar 10, a circuit breaker 11 is fixedly installed in the busbar box 3, and the busbar 10 is electrically connected to the circuit breaker 11.

[0053] A communication module 12 is fixedly installed in the busbar box 3, a power supply module 13 is fixedly installed in the busbar box 3, and the power supply module 13 is electrically connected to the communication module 12.

[0054] Under normal circumstances, a plurality of photovoltaic modules 2 generate direct current, which will enter the positive fuse 7 and the negative fuse 8 respectively through existing cables, and then enter the lightning protection module 9. At this time, the lightning protection module 9 is in a high impedance state. When the current flows through the sensitive elements (such as zinc oxide varistors, etc.) inside the lightning protection module 9, the elements will not conduct. At this time, the current will be conducted through the lightning protection module 9 to the busbar 10, and finally, under the conduction of the circuit breaker 11, it will be input into subsequent devices (such as a DC lightning protection power distribution cabinet, etc.).

[0055] Meanwhile, if the current flowing through the positive fuse 7 or the negative fuse 8 exceeds the rated current, the positive fuse 7 or the negative fuse 8 will fuse, thereby cutting off the entire circuit. Similarly, if the current conducted from the busbar 10 to the circuit breaker 11 exceeds its rated current or a short-circuit fault occurs, the circuit breaker 11 will automatically disconnect, cutting off the circuit, thereby realizing the protection of the device.

[0056] When lightning occurs, the lightning generates overcurrent that passes through the cable, the positive fuse 7, and the negative fuse 8, and finally injects into the lightning protection module 9. At this time, the resistance of the sensitive components inside it will drop sharply, and the lightning protection module 9 will instantly change from a high-impedance state to a low-impedance state. At this time, the lightning protection module 9 will conduct the overcurrent generated by the lightning strike into the grounding wire 4, and with the cooperation of the grounding wire 4 and the graphite grounding rod 6, the overcurrent will be quickly introduced into the ground, thereby effectively avoiding the damage to the internal components of the busbar box 3 caused by the overcurrent. (The internal structure of the lightning protection module 9 and how to specifically achieve lightning protection for the busbar box 3 are both existing mature technologies and will not be elaborated further here.)

[0057] The purpose of using the graphite grounding rod 6 for current conduction is that since the graphite material itself has good electrical conductivity, through the rod body made of graphite material, the grounding resistance can be effectively reduced, ensuring that the current in the grounding wire 4 can be quickly and smoothly introduced into the ground, which helps to improve the drainage effect of the equipment on the overcurrent. In addition, the graphite material has good corrosion resistance, oxidation resistance, and thermal stability, which can maintain its electrical conductivity for a long time and effectively extend the service life of the rod body at the same time.

[0058] The power supply module 13 arranged inside the busbar box 3 can provide stable power for each component inside the busbar box 3 to ensure the normal operation of each component. The operation of the communication module 12 can collect and transmit the operation status information and operation data of each component inside the busbar box 3. Through the communication module 12, it is convenient for users to monitor the working status of each component inside the busbar box 3 in real time and perform remote control, so as to improve the convenience and controllability of equipment use.

[0059] As Figures 1 to 3 、 Figure 5 and Figure 8 shown, the shunt component 5 includes two support rods 51 fixedly installed at the lower end of the busbar box 3. A heat conduction cylinder 57 is fixedly installed between the two support rods 51. An annular heat conduction plate 58 is fixedly installed on the inner wall of the heat conduction cylinder 57. An electromagnetic absorber 59 is fixedly installed on the inner wall of the annular heat conduction plate 58. Linearly and evenly distributed transmitting coils 518 are fixedly installed inside the electromagnetic absorber 59, and the transmitting coils 518 are all electrically connected to the grounding wire 4 (specifically, a welding connection method can be adopted between the two, such as winding the lead-out wire of the transmitting coil 518 around the middle part of the grounding wire 4 and then welding it with solder). An isolation component is installed inside the electromagnetic absorber 59, and a heat conduction mechanism is installed on the heat conduction cylinder 57.

[0060] The isolation component includes two isolation films 519 fixedly installed in the electromagnetic absorber 59, and both isolation films 519 are fixedly connected to the corresponding transmitting coils 518.

[0061] During thunderstorms, when the grounding wire 4 conducts overcurrent into the ground, multiple transmitting coils 518 can sense the magnetic field generated by the current in the grounding wire 4, thereby generating induced current, and the induced current will generate a new alternating magnetic field. This magnetic field will act on the electromagnetic absorber 59. At this time, the electromagnetic absorber 59 will absorb the energy of the alternating magnetic field and convert it into heat energy, so as to weaken the current and ensure the drainage effect of the equipment on the overcurrent generated by lightning strikes.

[0062] The electromagnetic absorber 59 can be specifically made of a composite of a magnetic absorption material (such as ferrite) and a dielectric absorption material (such as silicon carbide). Among them, the magnetic absorption material has a good absorption effect on low-frequency magnetic fields, while the dielectric absorption material has a good absorption effect on high-frequency electric fields. Since lightning current contains rich frequency components, the electromagnetic absorber 59 made of a composite material can improve its absorption effect on energy in different frequency ranges. For example, when the magnetic field and electric field generated by the lightning current passing through the grounding wire 4 act on the electromagnetic absorber 59, through the material properties of the electromagnetic absorber 59, it helps the electromagnetic absorber 59 to effectively absorb the energy in the low-frequency and high-frequency bands, thus helping to enhance the cooperation between the electromagnetic absorber 59 and the transmitting coil 518 and the weakening effect on the lightning current.

[0063] When the overcurrent generated by lightning strikes is introduced into the ground through the cooperation of the lightning protection module 9, the grounding wire 4, and the graphite grounding rod 6, if the lightning current is too large or the soil resistivity is relatively high, the graphite grounding rod 6 cannot quickly and effectively disperse the current into the ground. At this time, the overcurrent will ionize the soil around the graphite grounding rod 6 body, thereby generating a relatively high potential gradient. This high potential is likely to counterattack to the busbar box 3 and the electrical equipment around the busbar box 3, causing damage to the equipment. In addition, when the ground current is overloaded, it is easy to cause the graphite grounding rod 6 to continuously heat up and even melt, reducing the service life of the graphite grounding rod 6. Therefore, by consuming the current during the process of the grounding wire 4 conducting current, it can effectively avoid the situation that the current introduced into the ground is too large and causes damage to the equipment and the objects around the equipment.

[0064] A plurality of transmitting coils 518 are arranged closely around the outer periphery of the grounding wire 4. According to Ampere's circuital law, the magnetic field generated by the current is distributed in a ring shape centered on the current. Setting the transmitting coil 518 to be coaxially arranged with the grounding wire 4 can help each turn of the transmitting coil 518 to effectively cut the magnetic field lines. And by completely wrapping the transmitting coil 518 with the electromagnetic absorber 59, when an alternating magnetic field is generated by the induced current in the transmitting coil 518, the electromagnetic absorber 59 located outside it can comprehensively receive the magnetic field, and make full use of the electromagnetic absorption characteristics of the material to convert the magnetic field energy into heat energy, improving the absorption effect of the electromagnetic absorber 59 on the alternating magnetic field energy generated by the transmitting coil 518, that is, promoting the effect of the electromagnetic absorber 59 in converting the current into heat energy.

[0065] The isolation film 519 can specifically be made of materials with high magnetic permeability such as ferrite. By using two isolation films 519, the magnetic fields generated by the plurality of transmitting coils 518 can be limited within a certain range, reducing the leakage between the magnetic fields, thereby reducing the mutual interference between adjacent transmitting coils 518. For example, when magnetic fields are generated around a plurality of transmitting coils 518, according to Faraday's law of electromagnetic induction, a changing magnetic field will generate an induced electromotive force in nearby conductors (including other transmitting coils 518). Without the isolation film 519, the magnetic fields between these transmitting coils 518 will affect each other, generating an induced electromotive force, causing the current distribution between the transmitting coils 518 to change, thereby reducing the weakening effect of the electromagnetic absorber 59 on the current in the grounding wire 4.

[0066] As Figures 1 to 8 shown, the heat conduction mechanism includes heat conduction pads 510 linearly and uniformly fixed on the outer wall of the heat conduction cylinder 57. Heat conduction tubes 511 are fixedly installed on the heat conduction pads 510, and fin-shaped sheets 512 uniformly distributed in a ring shape are fixedly installed through and between the heat conduction tubes 511;

[0067] A plurality of heat dissipation holes 517 are formed in the electromagnetic absorber 59. The upper end of the heat conduction cylinder 57 is fixedly communicated with air delivery pipes 513 uniformly distributed in a ring shape. An annular pipe 514 is fixedly installed through and sealed between the air delivery pipes 513. One-way air suction pipes 515 uniformly distributed in a ring shape are fixedly communicated with the outer wall of the annular pipe 514. Air injection pipes 516 uniformly distributed in a ring shape are fixedly communicated with the inner wall of the annular pipe 514 (here, the outer ring and the inner ring refer to Figure 7 , Figure 7 the position where the one-way air suction pipe 515 is located in the attached drawing is the outer ring, and the position where the air injection pipe 516 is located is the inner ring), and the lower ends of the air injection pipes 516 are all located in the corresponding heat dissipation holes 517. An endothermic component is commonly installed between the air delivery pipes 513.

[0068] The heat absorption component includes an annular cylinder 52 fixedly installed on the opposite sides of the upper ends of two support rods 51. The lower ends of the two support rods 51 are jointly and fixedly installed with an air suction pipe 53. Two pipe bodies 54 are jointly and fixedly communicated between the annular cylinder 52 and the air suction pipe 53. A sealing slide plate 55 is hermetically and slidably installed in the annular cylinder 52. Piston rods 56 are hermetically and slidably installed in the air delivery pipes 513, and the upper ends of the piston rods 56 hermetically penetrate and are slidably installed on the annular cylinder 52, and the upper ends of the piston rods 56 are fixedly connected to the sealing slide plate 55.

[0069] As can be seen from Figure 7 it, a cavity is provided inside the heat conduction cylinder 57, and acetone liquid is previously injected into the cavity.

[0070] When the electromagnetic absorber 59 absorbs the energy of the alternating magnetic field generated by the transmitting coil 518 and converts it into heat energy, the temperature on the surface of the electromagnetic absorber 59 will continue to rise. If the heat of the electromagnetic absorber 59 itself is not dissipated in time, the electromagnetic performance of the electromagnetic absorber 59 will gradually decline, thereby reducing the consumption effect of the electromagnetic absorber 59 cooperating with the transmitting coil 518 to divert the overcurrent of the grounding wire 4.

[0071] The annular heat conduction plate 58 can be specifically made of a metal material (such as aluminum, etc.). Due to the good heat conduction performance of the metal material itself, the effect of the annular heat conduction plate 58 transferring the surface temperature of the electromagnetic absorber 59 to the wall of the heat conduction cylinder 57 can be effectively improved, so as to effectively ensure that the acetone liquid inside the heat conduction cylinder 57 is vaporized by heat in the follow-up, indirectly realizing the heat dissipation effect of the electromagnetic absorber 59.

[0072] When the electromagnetic absorber 59 converts electrical energy into heat, causing the temperature on its surface to continue to rise and transferring this heat to the wall of the heat conduction cylinder 57 through the annular heat conduction plate 58, the temperature of the wall of the heat conduction cylinder 57 will continue to rise. When the temperature of the wall of the heat conduction cylinder 57 reaches the temperature required for the evaporation of the acetone liquid stored inside it, the acetone liquid will quickly evaporate into gas. Since evaporation is an endothermic process, when the acetone liquid evaporates, it can absorb the heat of the wall of the heat conduction cylinder 57, thereby indirectly realizing the preliminary heat dissipation effect of the electromagnetic absorber 59.

[0073] When the current in the grounding wire 4 is relatively large, the magnetic field intensity generated by the transmitting coil 518 will also increase accordingly, and the eddy current generated in the electromagnetic absorber 59 will also increase. At this time, the surface temperature of the electromagnetic absorber 59 will further increase. Conversely, it will decrease relatively. For example, when the current in the grounding wire 4 increases from 10 A to 100 A, the magnetic field intensity generated by the transmitting coil 518 may increase several times. At this time, the eddy current intensity in the electromagnetic absorber 59 will also increase significantly, resulting in an increase in the heat generated on the surface of the electromagnetic absorber 59. Generally, for a relatively small grounding current (such as less than 10 A), the surface temperature of the electromagnetic absorber 59 may increase to about 30 degrees Celsius, while for a relatively large grounding current (such as greater than 100 A), the surface temperature of the electromagnetic absorber 59 will increase to above 100 degrees Celsius. The boiling point of acetone liquid is about 56 degrees Celsius, but by reducing the pressure inside the heat-conducting cylinder 57, the boiling point of acetone liquid can be appropriately reduced as required, thereby effectively ensuring the effect of indirectly dissipating heat from the electromagnetic absorber 59 through the vaporization of acetone liquid.

[0074] At the same time, when the gas generated by the evaporation of acetone liquid gradually increases, these gases will enter the interiors of multiple air ducts 513. When the gas flows through the narrow-diameter section of the air duct 513 (combined with Figure 5 、 Figure 6 it can be seen that the lower-diameter sections of the air ducts 513 are all relatively narrow, and the annular pipe 514 is installed on the constriction, that is, the narrow-diameter section, of multiple air ducts 513, and the interior of the annular pipe 514 is a cavity structure), since the amount of gas flowing into the interior of the air duct 513 remains unchanged, when the gas flows through the narrow-diameter section of the air duct 513 at this time, its flow velocity will increase relatively, and the air pressure will decrease relatively. At this time, according to the principle of fluid mechanics, gas always flows from a high-pressure area to a low-pressure area. Therefore, when the air pressure of the air duct 513 decreases as it flows through the narrow-diameter section, and the pressure inside the air duct 513 and the external atmospheric pressure are both in a relatively stable state, the pressure difference generated between this section of the diameter of the air duct 513 and the outside will cause the external gas to enter the interior of the annular pipe 514 through the one-way air suction pipe 515 opposite to the air duct 513 (as can be seen from Figure 5 multiple air ducts 513 are all in one-to-one correspondence with the corresponding one-way air suction pipes 515 and injection pipes 516), and the gas inside the annular pipe 514 will ultimately be output by the injection pipe 516.

[0075] The gas output by the injection pipe 516 will blow air to dissipate heat from the corresponding vertically distributed heat dissipation holes 517 (in the direction shown in Figure 5 ), thereby accelerating the gas flow velocity on the surface of the electromagnetic absorber 59, that is, accelerating the heat exchange velocity of the gas with the surface of the electromagnetic absorber 59, which helps to further improve the heat dissipation effect on the surface of the electromagnetic absorber 59.

[0076] From Figure 8As can be seen, a plurality of heat dissipation holes 517 are vertically arranged and distributed on the surface of the electromagnetic absorber 59, and heat dissipation grooves are formed on the annular heat conducting plate 58 and are matched with the corresponding plurality of heat dissipation holes 517. In this way, while ensuring the heat conduction effect of the annular heat conducting plate 58 on the electromagnetic absorber 59, it is also helpful for gas to flow between the electromagnetic absorber 59 and the annular heat conducting plate 58, and the heat dissipation speed of the surface of the electromagnetic absorber 59 is accelerated.

[0077] Meanwhile, when the gas entering the inside of the air duct 513 continuously increases, the gas will generate an upward thrust on the corresponding piston rod 56 (combined with Figure 4 and Figure 6 As can be seen, the piston rod 56 is composed of a piston disc and a rod body. The piston discs are all hermetically and slidably installed in the corresponding air ducts 513, the lower ends of the rod bodies are all fixedly installed on the corresponding piston discs, and the upper ends of the rod bodies are all fixedly connected to the sealing slide plate 55). When the plurality of piston rods 56 cooperate to push the sealing slide plate 55 to move upward, the generated suction force (as Figure 4 shown in the direction. When the sealing slide plate 55 moves upward, the volume of the lower end of the annular cylinder 52 gradually increases, and its air pressure will gradually decrease. The external atmospheric pressure is relatively stable. Therefore, a pressure difference is formed in this way. When the sealing slide plate 55 moves upward, a suction force will be generated), through the cooperation of the two pipe bodies 54 and the suction pipe 53, the plurality of heat dissipation holes 517 at the lower end of the electromagnetic absorber 59 are evacuated, so as to further accelerate the flow speed of the gas in the plurality of heat dissipation holes 517 on the electromagnetic absorber 59 (as can be seen from Figure 5 it can be seen that the diameters of the injection pipes 516 are all smaller than the diameters of the corresponding heat dissipation holes 517, so as to ensure that while the injection pipes 516 inject gas into the corresponding heat dissipation holes 517 and the suction pipes 53 evacuate the corresponding heat dissipation holes 517, air can flow in the vertically distributed plurality of heat dissipation holes 517), and further accelerate the heat exchange speed of the gas on the surface of the electromagnetic absorber 59.

[0078] Moreover, when the annular heat conducting plate 58 transfers the heat of the electromagnetic absorber 59 to the heat conducting cylinder 57, the plurality of heat conducting pads 510 can transfer the heat on the wall of the heat conducting cylinder 57 to the plurality of heat conducting pipes 511 and the fins 512, so as to further dissipate the heat of the heat conducting cylinder 57, which helps to accelerate the heat conduction effect of the heat conducting cylinder 57 on the electromagnetic absorber 59 and further accelerate the heat dissipation effect of the electromagnetic absorber 59.

[0079] A small amount of working fluid (such as water, ammonia, etc.) is filled inside multiple heat conduction tubes 511. When the temperature of the cylinder wall of the heat conduction cylinder 57 continues to rise, the heat on the heat conduction cylinder 57 is transferred to the heat conduction tubes 511 through multiple heat conduction pads 510. At this time, the working fluid inside the heat conduction tubes 511 evaporates and moves towards the cold ends of the heat conduction tubes 511, taking away heat. And through multiple fins 512, the contact area between the heat conduction cylinder 57 and the air can be effectively increased. Through natural air convection, the temperature on the cylinder wall of the heat conduction cylinder 57 can be dissipated into the surrounding environment, thereby realizing further heat dissipation treatment for the cylinder wall of the heat conduction cylinder 57.

[0080] Through the multi-stage heat dissipation treatment of the electromagnetic absorber 59, while effectively improving the heat dissipation speed of the electromagnetic absorber 59, it further ensures that the electromagnetic absorber 59 continuously converts current into heat energy and weakens the effect of the diverted current in the grounding wire 4.

[0081] As Figures 11 to 14 shown, the trigger assembly 14 includes two fixed plates fixedly installed on the inner top wall of the busbar box 3. Heat insulation cylinders 144 are fixedly installed at the upper ends of the two fixed plates. A heat dissipation component is installed between the two heat insulation cylinders 144. Connecting pipes 147 penetrate and are fixedly installed at the upper ends of the two heat insulation cylinders 144. Rotating shafts 149 are hermetically penetrated and rotatably installed on the two connecting pipes 147. A trigger mechanism is installed on the left rotating shaft 149 (here, the left side refers to Figure 12 , Figure 12 the position where the heat conduction block 145 is located in the attached drawing reference numerals).

[0082] The heat dissipation component includes storage cylinders 146 respectively fixedly installed inside the two heat insulation cylinders 144 (through the heat insulation cylinders 144, the influence of the temperature inside the busbar box 3 on the liquid inside the storage cylinders 146 can be effectively avoided). And the lower ends of the two connecting pipes 147 are fixedly connected to the corresponding storage cylinders 146. Heat conduction blocks 145 are fixedly installed between the two storage cylinders 146 and the lightning protection module 9, and both heat conduction blocks 145 are hermetically penetrated and fixedly installed on the corresponding heat insulation cylinders 144. Guide pipes 148 are fixedly communicated between the upper ends of the two storage cylinders 146 and the lower ends of the corresponding connecting pipes 147. At the lower ends of the two rotating shafts 149, fan blades 1410 evenly distributed in a ring are fixedly installed, and at the upper ends of the two rotating shafts 149, two fans 1411 are fixedly installed.

[0083] A rain shield is fixedly installed on the busbar box 3. Two air inlet holes are opened on the busbar box 3 (drawn but not marked in the figure, which can be seen from Figure 11 the figure). Dehumidification plates 141 are fixedly installed on the two air inlet holes. Two drainage plates 142 are fixedly installed inside the busbar box 3. Multiple ventilation holes 143 are opened on the busbar box 3.

[0084] When a lightning current is injected into the lightning protection module 9, due to the existence of the resistance of the sensitive components inside the lightning protection module 9, the heat generated by the current will cause the surface temperature of the lightning protection module 9 to rise rapidly. For example, after the zinc oxide varistor inside the lightning protection module 9 is impacted by a 10 kA lightning current, the surface temperature will rise to about 120 degrees Celsius and then gradually decrease. However, if the lightning protection performance of the lightning protection module 9 deteriorates and the zinc oxide varistor inside it ages, under the same 10 kA lightning current impact, its surface temperature may rise rapidly to about 180 degrees Celsius and the subsequent temperature decrease rate is slow.

[0085] When the lightning protection module 9 is frequently struck by lightning or the lightning current amplitude is too large, the lightning protection module 9 itself may be damaged. For example, key components such as the zinc oxide varistor inside the lightning protection module 9 may experience a decline in performance or be directly damaged after being subjected to high-amplitude lightning current impacts multiple times.

[0086] Under normal circumstances, when a lightning current flows through the lightning protection module 9 and its surface temperature rises rapidly, at this time, through the two heat conduction blocks 145, the heat on the surface of the lightning protection module 9 will be transferred to the walls of the two storage cylinders 146, causing the ethanol liquid stored inside the two storage cylinders 146 to vaporize rapidly (the boiling point of the ethanol liquid is about 78 degrees Celsius), thereby realizing the preliminary heat dissipation of the surface of the lightning protection module 9.

[0087] At the same time, the diameters of the two conduits 148 are both set to be small. When the ethanol liquid stored in the two storage cylinders 146 is converted into gas, when the gas enters the corresponding connecting pipe 147 along the conduit 148 with a small diameter, a large-pressure air flow will be generated. At this time, the driving force generated by the air flow will drive the corresponding multiple fan blades 1410 to drive the corresponding rotating shafts 149 and the two fans 1411 to rotate. The suction force generated when the multiple fans 1411 rotate can suck the outside gas into the confluence box 3 through the corresponding air inlet holes (both of the two air inlet holes are located directly above the corresponding fans 1411), and under the diversion of the two diversion plates 142, blow air to dissipate heat from the surface of the lightning protection module 9 (as can be seen from Figure 10 it, the two diversion plates 142 are respectively inclined and arranged at the upper left end and the upper right end of the lightning protection module 9), thereby further accelerating the heat dissipation speed of the surface of the lightning protection module 9, and the heat-dissipated gas will finally be discharged from the multiple ventilation holes 143 on the right side wall of the confluence box 3 (in the direction shown in Figure 9 ).

[0088] The lightning protection module 9 contains a variety of electronic components inside, such as varistors, gas discharge tubes, and transient suppression diodes. When the surface temperature dissipates heat in a timely manner, the aging rate of these components will significantly accelerate. Therefore, by dissipating heat from the lightning protection module 9 in a timely manner, it can effectively prevent the surface temperature of the lightning protection module 9 from being too high and damaging its internal components, which helps to ensure the lightning protection effect of the lightning protection module 9 in cooperation with the grounding wire 4 and the graphite grounding rod 6 for the equipment.

[0089] At the same time, through two dehumidification plates 141, the gas inhaled into the inside of the busbar box 3 can be dried, thereby effectively reducing the corrosion of the lightning protection module 9 and the internal components of the busbar box 3 by moisture.

[0090] As Figures 12 to 15 shown, the triggering mechanism includes a limiting cylinder 1412 rotatably mounted on the left shaft 149. Two fuses 1414 are fixedly installed inside the limiting cylinder 1412. A connecting component is jointly installed between the two fuses 1414 and the left heat conducting block 145. An active contact plate 1416 is jointly fixedly installed between the two fuses 1414, and the active contact plate 1416 is slidably installed inside the limiting cylinder 1412. A fixed contact plate 1417 is fixedly installed inside the limiting cylinder 1412.

[0091] The connecting component includes a heat conducting rod 1413 fixedly installed on the left heat conducting block 145. Heat conducting rings 1415 are sleeved on both of the two fuses 1414, and both of the two heat conducting rings 1415 are fixedly connected to the heat conducting rod 1413.

[0092] When the lightning protection performance of the lightning protection module 9 decreases, when the lightning current is injected into the lightning protection module 9 at this time, the surface temperature of the lightning protection module 9 will continue to rise to about 180 degrees Celsius. At this time, through the cooperation of the left heat conducting block 145 with the heat conducting rod 1413 and the two heat conducting rings 1415 (in the direction as Figure 12 shown), the high temperature on the surface of the lightning protection module 9 will be transferred to the fuses 1414, causing the two fuses 1414 to melt (the melting temperature of the two fuses 1414 is set at about 180 degrees Celsius. When the temperature reaches about 180 degrees Celsius, its physical structure will change, resulting in its melting). At this time, the active contact plate 1416 will slide downward under its own gravity (in the direction as Figure 15 shown) until the lower end of the active contact plate 1416 contacts the upper end of the fixed contact plate 1417.

[0093] When the movable touch plate 1416 contacts the fixed touch plate 1417, an alarm (an existing device not shown in the figure) externally installed on the busbar box 3 will be triggered, causing the alarm to emit an alarm sound, thereby reminding the staff to promptly repair or replace the lightning protection module 9 in a timely manner, ensuring the drainage effect of the lightning protection module 9 and the grounding wire 4 on the lightning strike current, as well as the timeliness of the drainage.

[0094] The working process of the technical solution of the present invention is as follows:

[0095] Under normal circumstances, the lightning protection module 9 is in a high impedance state. In thunderstorm weather, when the overcurrent generated by the lightning strike is injected into the lightning protection module 9, the resistance inside it will rapidly decrease and become a low resistance state. At this time, the lightning protection module 9 will guide the overcurrent to the grounding wire 4 and discharge it to the ground through the graphite grounding rod 6.

[0096] During the process of the grounding wire 4 draining the current, multiple transmitting coils 518 can cooperate to guide a part of the overcurrent drained by the grounding wire 4 to the electromagnetic absorber 59, and the electromagnetic absorber 59 can effectively convert this part of the current into heat energy, thereby effectively reducing the intensity of the overcurrent drained by the grounding wire 4 and achieving the weakening effect on the overcurrent.

[0097] At the same time, during the process of the electromagnetic absorber 59 converting a part of the current drained by the grounding wire 4 into heat energy, the cooperation of the annular heat conducting plate 58, the heat conducting cylinder 57, and the acetone liquid inside the heat conducting cylinder 57 can achieve the preliminary heat dissipation of the electromagnetic absorber 59. At the same time, through the cooperation of the heat conducting mechanism, the heat absorbing component, and multiple fins 512, the electromagnetic absorber 59 can be further dissipated, thereby effectively accelerating the heat dissipation speed of the electromagnetic absorber 59, which helps to improve the continuous absorption and conversion of the overcurrent in the grounding wire 4 by the electromagnetic absorber 59.

[0098] In addition, when the overcurrent generated by the lightning strike is injected into the lightning protection module 9, the resistance inside the lightning protection module 9 will cause the surface temperature of the lightning protection module 9 to rapidly increase. At this time, through the heat dissipation component, the timely heat dissipation of the lightning protection module 9 can be achieved, which helps the continuous and stable operation of the internal components of the lightning protection module 9. At the same time, if the lightning protection performance of the lightning protection module 9 decreases, at this time, through the triggering mechanism, the alarm externally installed on the busbar box 3 can be prompted to emit an alarm sound, thereby facilitating the reminder of the staff to promptly repair or replace the lightning protection module 9.

[0099] The present invention encompasses any alternatives, modifications, equivalent methods, and solutions that are made within the spirit and scope of the present invention. For the purpose of enabling the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention even without the description of these details. Additionally, well-known methods, processes, procedures, components, and circuits are not described in detail to avoid unnecessary confusion to the essence of the present invention.

[0100] The above description is only a preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A lightning protection structure applicable to an intelligent busbar box of a photovoltaic power station, comprising a support frame, on which a plurality of photovoltaic modules are fixedly installed, a busbar box is fixedly installed on the support frame, a lightning protection module is fixedly installed in the busbar box, a grounding wire penetrates and is fixedly installed on the busbar box and is electrically connected to the lightning protection module, a graphite grounding rod is fixedly installed on the grounding wire, a shunt component is arranged at the lower end of the busbar box, and a triggering component is arranged in the busbar box; It is characterized in that The shunt component includes two support rods fixedly installed at the lower end of the busbar box. A heat conduction cylinder is fixedly installed between the two support rods. An annular heat conduction plate is fixedly installed on the inner wall of the heat conduction cylinder. An electromagnetic absorber is fixedly installed on the inner wall of the annular heat conduction plate. Linearly and uniformly distributed transmitting coils are fixedly installed in the electromagnetic absorber, and the transmitting coils are all electrically connected to the grounding wire. An isolation component is installed in the electromagnetic absorber, and a heat conduction mechanism is installed on the heat conduction cylinder; The triggering component includes two fixed plates fixedly installed on the inner top wall of the busbar box. Heat insulation cylinders are fixedly installed at the upper ends of the two fixed plates. A heat dissipation component is installed between the two heat insulation cylinders. Connecting pipes penetrate and are fixedly installed on the two heat insulation cylinders. Rotating shafts are hermetically penetrated and rotatably installed at the upper ends of the two connecting pipes. A triggering mechanism is installed on the left rotating shaft.

2. The lightning protection structure applicable to the intelligent busbar trunking cabinet for a photovoltaic power station according to claim 1, wherein, The isolation component includes two isolation films fixedly installed in the electromagnetic absorber, and both isolation films are fixedly connected to the corresponding transmitting coils.

3. The lightning protection structure applicable to the intelligent busbar trunking unit of a photovoltaic power station according to claim 1, characterized in that, The heat conduction mechanism includes heat conduction pads linearly and uniformly fixedly installed on the outer wall of the heat conduction cylinder. Heat conduction pipes are fixedly installed on the heat conduction pads. Fins are penetrated and fixedly installed in a circular and uniform distribution between the heat conduction pipes; A plurality of heat dissipation holes are formed in the electromagnetic absorber. The upper end of the heat conduction cylinder is fixedly communicated with annular and uniformly distributed air supply pipes. An annular pipe is hermetically penetrated and fixedly installed between the air supply pipes. Unidirectional air suction pipes are fixedly communicated with the outer wall of the annular pipe in a circular and uniform distribution. Injecting pipes are fixedly communicated with the inner wall of the annular pipe in a circular and uniform distribution, and one end of each injecting pipe is located in the corresponding heat dissipation hole. A heat absorption component is installed between the air supply pipes.

4. The lightning protection structure applicable to the intelligent busbar trunking unit of a photovoltaic power station according to claim 3, characterized in that, The heat absorption component includes an annular cylinder fixedly installed between the two support rods. An air suction pipe is fixedly installed at the lower ends of the two support rods. Two pipe bodies are fixedly communicated between the annular cylinder and the air suction pipe. A sealing slide plate is hermetically slidably installed in the annular cylinder. Piston rods are hermetically slidably installed in the air supply pipes, and the upper ends of the piston rods hermetically penetrate and slide on the annular cylinder, and the upper ends of the piston rods are fixedly connected to the sealing slide plate.

5. The lightning protection structure applicable to the intelligent busbar trunking unit for a photovoltaic power station according to claim 1, wherein, The heat dissipation component includes storage cylinders respectively and fixedly installed in two heat insulation cylinders, and the lower ends of the two connecting pipes are fixedly connected to the corresponding storage cylinders. Heat conduction blocks are fixedly installed between the two storage cylinders and the lightning protection module, and both heat conduction blocks are hermetically penetrated and fixedly installed on the corresponding heat insulation cylinders. A conduit is fixedly connected and communicated between the upper ends of the two storage cylinders and the lower ends of the corresponding connecting pipes. The lower ends of the two rotating shafts are fixedly installed with fan blades evenly distributed in a ring shape, and the upper ends of the two rotating shafts are fixedly installed with two fans.

6. The lightning protection structure applicable to the intelligent busbar trunking box of a photovoltaic power station according to claim 1, wherein, The triggering mechanism includes a limiting cylinder rotatably installed on the left rotating shaft. Two fuse wires are fixedly installed in the limiting cylinder. A connecting component is commonly installed between the two fuse wires and the left heat conduction block. An active contact plate is commonly fixedly installed between the two fuse wires, and the active contact plate is slidably installed in the limiting cylinder. A fixed contact plate is fixedly installed in the limiting cylinder.

7. The lightning protection structure applicable to the intelligent busbar trunking unit of a photovoltaic power station according to claim 6, characterized in that, The connecting component includes a heat conduction rod fixedly installed on the left heat conduction block. Heat conduction rings are sleeved on the two fuse wires, and both heat conduction rings are fixedly connected to the heat conduction rod.

8. The lightning protection structure applicable to the intelligent busbar trunking box of a photovoltaic power station according to claim 1, characterized in that, A rain shield is fixedly installed on the busbar box. Two air inlet holes are opened on the busbar box. Dehumidification plates are fixedly installed on the two air inlet holes. Two drainage plates are fixedly installed in the busbar box. A plurality of ventilation holes are opened on the busbar box.

9. The lightning protection structure applicable to the intelligent busbar trunking unit for a photovoltaic power station according to claim 1, characterized in that, A positive fuse is fixedly installed in the busbar box. A negative fuse is fixedly installed in the busbar box. The positive fuse and the negative fuse are both electrically connected to the lightning protection module. A busbar is fixedly installed in the busbar box, and the lightning protection module is electrically connected to the busbar. A circuit breaker is fixedly installed in the busbar box, and the busbar is electrically connected to the circuit breaker.

10. The lightning protection structure applicable to the intelligent busbar trunking unit for a photovoltaic power station according to claim 1, wherein, A communication module is fixedly installed in the busbar box. A power supply module is fixedly installed in the busbar box, and the power supply module is electrically connected to the communication module.

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